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Consider 5 kg of air initially at 101.3 kPa and 38 C. Heat is transferred to the air until the temperature reaches 260 C. Determine the change in internal energy, the change in enthalpy, the heat transfer, and the work done for (a) a constant-volume process and (b) a constant-pressure process. Use SI units. Show pv and tv graphs. Are the systems closed and are they rigid?
determine the magitudes of the horizontal and vertical reactions of the chair on the man at the instant . At this instant he has a speed of 6 m/s, which is increasing at 0.5 m/s^2.
a rigid container is separated into 2 compartments by a very thin solid membrane. one side initially holds 2 m3 of air
methane is to be compressed from 0.05 mpa and -120degf to 5 mpa in a two-stage compressor. in between adiabatic
for temperatures between 300 and 1000 k and at 1 atm the molar specific enthalpy of o2 is expressed by the following
an air bubble 0.3 in. in diameter is released from the regulator of a scuba diver swimming 100 ft. below the sea sg
a mixing chamber receives 3kgmin ammonia as saturated liquid at -20 c from one line and ammonia at 40 c 300 kpa from
a two-engine jet transport has a loaded weight of 90000 lb and a forward thrust of 9800 lb per engine during takeoff.
hot gas inside an internal combustion engine of a car expands in a reversible manner during the expansion stroke to
water is flowing in a 10 m high horizontal pipe line having a diameter of 10 cm at a pressure of 200 kpa and velocity
the inner and outer surfaces of a 0.5 cm thick x 2.0 m x 2.0 m window glass in winter are 12degc and 4degc
two tissues a and b are placed in a gas chamber and equilibrated with carbon monoxide gas at various partial pressures
a piston cylinder device initially contains 0.5 kg of r134a at 200 kpa and a specfic volume of 0.07 m3kg. at this point
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